conversance

n. 熟悉,精通

convalescent, convection, convector, convene, convener (also convenor), convenience, convenience food, convenient, conveniently, convent, convention, conventional, conventionality, conventionalize, conventionalize, -ise, conventionally, conventions, converge, convergence, convergent, conversant, conversation, conversational, conversationalist, converse, conversely, conversion, convert, convert into, converter, convertor, convertibility, convertible, convex, convexity, convey, conveyance, conveyancer, conveyancing, conveyor, conveyer, convict,